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Highlights
- Optimised study uncovers processing efficiencies.
- Enhanced test work supports operational improvements.
- Refined planning cuts power use and capital risk.
Barton Gold Holdings (ASX:BGD) has advanced its Tunkillia project in South Australia by completing an optimised scoping study that signals promising improvements in processing efficiency. Launched in November, the comprehensive review targeted critical areas such as comminution circuit design, variable grind sizing, power consumption, mill throughput planning, and mine scheduling.
The study involved extensive drilling and comminution test work, with scenario analyses comparing the performance of fresh versus oxide material at varying grind sizes. Early findings indicate that both fresh and oxide materials benefit from lower work indices, translating into reduced power consumption across the board. In addition, softer oxide materials demonstrated increased effective throughput rates during the project’s initial operational phase. An independent technical consultancy is set to verify these encouraging results by the end of June, further reinforcing the potential for significant operational enhancements.
This strategic exercise is designed to improve the overall economics of the Tunkillia project by reducing power demands and streamlining work processes. By focusing on these key areas, the study has paved the way for clearer, more informed planning ahead of detailed feasibility studies. The adjustments made through this optimisation exercise are anticipated to mitigate risks related to energy price volatility and working capital exposure, setting a firm foundation for future project development.
The current phase of the study builds on an earlier scoping effort released in July. That initial study had already demonstrated the project’s capability to achieve efficiencies of scale, with projections of an average production rate of 130,000 ounces of gold and 311,000 ounces of silver per annum. Furthermore, it highlighted the potential for the early development of a higher-grade “starter” pit, which could generate substantial gold production and contribute to improved operating cash flow during the first 18 months of processing.
With these new insights, the Tunkillia project’s refined operational plan now appears more robust. The updated test work and analysis not only support a reduction in power consumption but also enhance the overall planning for accelerated feasibility studies. The focus on achieving processing efficiency while curtailing costs and capital risks positions the project to unlock additional value. As the optimisation study continues to unfold, the future of the Tunkillia project looks set to benefit from improved technical and economic fundamentals that may drive enhanced performance in upcoming phases.
